Improved rotary engine



PATENT OFFICE.

ABRAHAM BAMSDELL, OF MOSCOW?, MICHIGAN.

IMPROVED ROTARY ENGINE.

Specification forming part of Letters Patent No. 40,278, dated October13, 1863.

To all whom t may concern,.-

Beit known that I, ABRAHAM RAMsDELL, of the township of Moscow,Hillsdale county, Michigan, have invented a Rotary Steam-Engine; and Ido hereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawing, and to theletters of reference marked thereon, in which- A represents the main ordriving shaft. B B are two disks or wheels rmly attached to said shaftA, and G O the Casin g or covering ofthe wheels BB. This casing is ofgreater diameter than B B, and is grooved on the inside so as to'form acylindrical chamber of greater diameter than B B, and in which thepiston D moves. 'l`he piston D is attached to l B, and fits andrevolvesin the said chamber,

` the easing and cylinder, of course, being stationary.

F F are two sliding heads or abutments against which the steam acts, andwhich are made to slide in and out as the piston revolves. Theseslidingheads are attached to rods G G, which extend through a groove orslot in the face ofthe circular inclined planes E E. The rod G has asmall cross upon the end of it which bears upon the inner surface ot'the inclined plane, and which, by being thus acted upon by the interiorsurface and form of the inclined plane, governs the motion of the headsor abutinents F F. This cross is more plainly shown in the perspectiveview of E given at E2. The inclined planesE E are rmly attached to theshaft A.

H is a box or sleeve through which G plays,

' and which is rigidly attached to I, while I is rigidl \r attached tothe bottom of the steamchest P.

K K and h h are valverods. The rods K K extend through the steam-chest,with two valves on each. h h are attached to K K and moved by them, butare also moved by the lever L. The rods K K are moved by the eccentricbows l I, which are attached to the inclined planes E E. Theseeccentrics, as well as the inclined planes, are so placed upon the shaftthat they reciprocate each others motion, acting alternately on thevalve-rods. The lever L is attached to the rod M, which runs through theentire length of the steamchest, and which is stationary, except whenacted upon by the lever L. When so acted upon, and thereby partiallyrevolved or turned, it is made to govern the position ofthe valves inthe steam-chest in such a manner as to either increase or diminish theopening of the ports, thus making them either induction or eductionvalves, either steam or exhaust valves, as the circumstances mayrequire.

Having thus given a general description ot' the construction andoperation ot' my rotary engine, what l claim as my invention, and desireto secure by Letters Patent, is-

l. rEhe inclined planes E E, with the eccentric bows O C thereon.

2. The valves in the steam-chest, as arranged and operated by the leverL, with its connecting parts.

3. The steam-chest, with its system ofvalves, as described, and thepiston and casing, the whole combined, constructed, and operating asdescribed.

ABRAHAM ltAMSDELL.

